C11111211113313112113313331333133313331333131211113313331333133312233222311   >>    C1111121111331311211331333133313331333133313121111331333133313331223322231   <<    C11111211113313112113313331333133313331333131211113313331333133312233222313   >>      C11111211113313112113313331333133313331333131211113313331333133312233222312   >>